**************************************************************************
USACE / NAVFAC / AFCEC / NASA
UFGS-40 18 00.00 40 (May 2014)
----------------------------------Preparing Activity: NASA
Superseding
UFGS-40 18 00.00 40 (February 2011)
UFGS-40 18 00 (February 2011)
UNIFIED FACILITIES GUIDE SPECIFICATIONS
References are in agreement with UMRL dated January 2016
**************************************************************************
SECTION TABLE OF CONTENTS
DIVISION 40 - PROCESS INTERCONNECTIONS
SECTION 40 18 00.00 40
VACUUM SYSTEMS PROCESS PIPING
05/14
PART 1
GENERAL
1.1
REFERENCES
1.2
SUBMITTALS
1.3
QUALITY ASSURANCE
1.3.1
Predictive Testing and Inspection Technology Requirements
PART 2
PRODUCTS
2.1
COMPONENTS
2.1.1
VALVES
2.1.1.1
Ball Valves, Vacuum (BAVV)
2.1.1.2
Butterfly Valves, Vacuum (BUVV)
2.1.1.3
Diaphragm Control and Instrument Valves (DCIV)
2.1.1.4
Gage Cocks (GC)
2.1.1.5
Globe and Angle Valves (GLV And ANV)
2.1.2
Supporting Elements
2.1.2.1
Supports
2.1.2.2
Building Structure Attachments
2.1.2.3
Horizontal Pipe Attachments
2.1.2.4
Vertical Pipe Attachments
2.1.2.5
Hanger Rods and Fixtures
2.1.2.6
Supplementary Steel
2.1.3
Pressure Gages
2.1.4
Thermometers
2.1.5
Bolting
2.2
MATERIALS
2.2.1
Aboveground Piping Materials
2.2.1.1
Black Carbon Steel
2.2.1.2
Galvanized Carbon Steel
2.2.1.3
Spiral Welded Pipe
2.2.2
Control and Instrumentation System Tubing
2.2.3
Grooved Pipe Couplings and Fittings
2.2.4
Metallic Expansion Joints
2.2.5
Elastomer Caulk
SECTION 40 18 00.00 40
Page 1
2.2.6
2.2.7
2.2.8
PART 3
Flashing
Flange Gaskets
Pipe Thread Compounds
EXECUTION
3.1
INSTALLATION
3.1.1
Aboveground Piping Systems
3.1.2
Joints
3.1.3
Control and Instrument Air Piping
3.1.4
Supporting Elements Installation
3.1.5
Sound Stopping
3.1.6
Sleeves
3.1.7
Escutcheons
3.1.8
Flashings
3.2
FIELD QUALITY CONTROL
3.2.1
Vacuum Systems Testing
3.2.2
Test Gages
3.2.3
Acceptance Pressure Testing
3.2.4
Acceptance Vacuum Testing
-- End of Section Table of Contents --
SECTION 40 18 00.00 40
Page 2
**************************************************************************
USACE / NAVFAC / AFCEC / NASA
UFGS-40 18 00.00 40 (May 2014)
----------------------------------Preparing Activity: NASA
Superseding
UFGS-40 18 00.00 40 (February 2011)
UFGS-40 18 00 (February 2011)
UNIFIED FACILITIES GUIDE SPECIFICATIONS
References are in agreement with UMRL dated January 2016
**************************************************************************
SECTION 40 18 00.00 40
VACUUM SYSTEMS PROCESS PIPING
05/14
**************************************************************************
NOTE: This specification covers the requirements
for aboveground low-vacuum systems defined for the
purposes of this section as systems at pressures
less than atmospheric and ranging to approximately
100 kilopascal (29.5 inches of mercury), 1.734
kilopascal (0.25144 psi) or 13 millimeter of mercury
29.5 inches of mercury vacuum or the approximately
absolute; 0.25144 pound per square inch, absolute,
13,000 microns of mercury absolute, or 13 torr.
Ensure drawings completely detail anchors,
restraining guides, sway braces, and shock absorbing
provisions to accommodate reaction forces
encountered, as well as other piping support
elements not covered by the following specifications.
Adhere to UFC 1-300-02 Unified Facilities Guide
Specifications (UFGS) Format Standard when editing
this guide specification or preparing new project
specification sections. Edit this guide
specification for project specific requirements by
adding, deleting, or revising text. For bracketed
items, choose applicable items(s) or insert
appropriate information.
Remove information and requirements not required in
respective project, whether or not brackets are
present.
Comments, suggestions and recommended changes for
this guide specification are welcome and should be
submitted as a Criteria Change Request (CCR).
**************************************************************************
PART 1
GENERAL
**************************************************************************
NOTE: If Section 23 00 00 AIR SUPPLY, DISTRIBUTION,
VENTILATION, AND EXHAUST SYSTEMS is not included in
the project specification, applicable requirements
SECTION 40 18 00.00 40
Page 3
therefrom should be inserted and the first paragraph
deleted. If Section 23 05 48.00 40 VIBRATION AND
SEISMIC CONTROLS FOR HVAC PIPING AND EQUIPMENT is
not included in the project specification,
applicable requirements therefrom should be inserted
and the second paragraph deleted. If Section
40 17 30.00 40 WELDING GENERAL PIPING is not
included in the project specification, applicable
requirements therefrom should be inserted and the
third paragraph deleted.
**************************************************************************
[ Section 23 00 00 AIR SUPPLY, DISTRIBUTION, VENTILATION, AND EXHAUST SYSTEMS
apply to work specified in this section.
][Section 23 05 48.00 40 VIBRATION AND SEISMIC CONTROLS FOR HVAC PIPING AND
EQUIPMENT applies to work in this section.
][Section 40 17 30.00 40 WELDING GENERAL PIPING applies to work specified in
this section.
]1.1
REFERENCES
**************************************************************************
NOTE: This paragraph is used to list the
publications cited in the text of the guide
specification. The publications are referred to in
the text by basic designation only and listed in
this paragraph by organization, designation, date,
and title.
Use the Reference Wizard's Check Reference feature
when you add a RID outside of the Section's
Reference Article to automatically place the
reference in the Reference Article. Also use the
Reference Wizard's Check Reference feature to update
the issue dates.
References not used in the text will automatically
be deleted from this section of the project
specification when you choose to reconcile
references in the publish print process.
**************************************************************************
The publications listed below form a part of this specification to the
extent referenced. The publications are referred to within the text by the
basic designation only.
AMERICAN ASSOCIATION OF STATE HIGHWAY AND TRANSPORTATION OFFICIALS
(AASHTO)
AASHTO M 314
(1990; R 2013) Standard Specification for
Steel Anchor Bolts
AMERICAN INSTITUTE OF STEEL CONSTRUCTION (AISC)
AISC 360
(2010) Specification for Structural Steel
Buildings
SECTION 40 18 00.00 40
Page 4
AMERICAN WATER WORKS ASSOCIATION (AWWA)
AWWA C207
(2013) Standard for Steel Pipe Flanges for
Waterworks Service-Sizes 100 mm through
3600 mm 4 in. through 144 in.
AWWA C208
(2012) Standard for Dimensions for
Fabricated Steel Water Pipe Fittings
AWWA C504
(2010) Standard for Rubber-Seated
Butterfly Valves
AMERICAN WELDING SOCIETY (AWS)
AWS WHB-2.9
(2004) Welding Handbook; Volume 2, Welding
Processes, Part 1
ASME INTERNATIONAL (ASME)
ASME B16.1
(2010) Gray Iron Pipe Flanges and Flanged
Fittings Classes 25, 125, and 250
ASME B16.11
(2011) Forged Fittings, Socket-Welding and
Threaded
ASME B16.22
(2013) Standard for Wrought Copper and
Copper Alloy Solder Joint Pressure Fittings
ASME B16.3
(2011) Malleable Iron Threaded Fittings,
Classes 150 and 300
ASME B16.39
(2014) Standard for Malleable Iron
Threaded Pipe Unions; Classes 150, 250,
and 300
ASME B16.5
(2013) Pipe Flanges and Flanged Fittings:
NPS 1/2 Through NPS 24 Metric/Inch Standard
ASME B16.9
(2012) Standard for Factory-Made Wrought
Steel Buttwelding Fittings
ASME B18.2.1
(2012; Errata 2013) Square and Hex Bolts
and Screws (Inch Series)
ASME B18.2.2
(2010) Nuts for General Applications:
Machine Screw Nuts, Hex, Square, Hex
Flange, and Coupling Nuts (Inch Series)
ASME B31.1
(2014; INT 1-47) Power Piping
ASME B31.3
(2014) Process Piping
ASME B40.100
(2013) Pressure Gauges and Gauge
Attachments
ASME B46.1
(2009) Surface Texture, Surface Roughness,
Waviness and Lay
SECTION 40 18 00.00 40
Page 5
Copper Tube for Air Conditioning and
Refrigeration Field Service
ASTM B370
(2012) Standard Specification for Copper
Sheet and Strip for Building Construction
ASTM B62
(2015) Standard Specification for
Composition Bronze or Ounce Metal Castings
ASTM B749
(2014) Standard Specification for Lead and
Lead Alloy Strip, Sheet and Plate Products
ASTM C592
(2013) Standard Specification for Mineral
Fiber Blanket Insulation and Blanket-Type
Pipe Insulation (Metal-Mesh Covered)
(Industrial Type)
ASTM C920
(2014a) Standard Specification for
Elastomeric Joint Sealants
ASTM D2000
(2012) Standard Classification System for
Rubber Products in Automotive Applications
ASTM E1
(2014) Standard Specification for ASTM
Liquid-in-Glass Thermometers
ASTM F1120
(1987; R 2015) Standard Specification for
Circular Metallic Bellows Type Expansion
Joints for Piping Applications
ASTM F147
(1987; R 2009) Standard Test Method for
Flexibility of Non-Metallic Gasket Material
ASTM F568M
(2007) Standard Specification for Carbon
and Alloy Steel Externally Threaded Metric
Fasteners
FLUID SEALING ASSOCIATION (FSA)
FSA-0017
(1995e6) Standard for Non-Metallic
Expansion Joints and Flexible Pipe
Connectors Technical Handbook
INSTITUTE OF ENVIRONMENTAL SCIENCES AND TECHNOLOGY (IEST)
IEST-STD-CC1246
(2013; Rev E) Product Cleanliness Levels
and Contamination Control Program
MANUFACTURERS STANDARDIZATION SOCIETY OF THE VALVE AND FITTINGS
INDUSTRY (MSS)
MSS SP-104
(2012) Wrought Copper Solder Joint
Pressure Fittings
MSS SP-43
(2013) Wrought Stainless Steel
Butt-Welding Fittings
MSS SP-58
(1993; Reaffirmed 2010) Pipe Hangers and
Supports - Materials, Design and
SECTION 40 18 00.00 40
Page 7
Copper Tube for Air Conditioning and
Refrigeration Field Service
ASTM B370
(2012) Standard Specification for Copper
Sheet and Strip for Building Construction
ASTM B62
(2015) Standard Specification for
Composition Bronze or Ounce Metal Castings
ASTM B749
(2014) Standard Specification for Lead and
Lead Alloy Strip, Sheet and Plate Products
ASTM C592
(2013) Standard Specification for Mineral
Fiber Blanket Insulation and Blanket-Type
Pipe Insulation (Metal-Mesh Covered)
(Industrial Type)
ASTM C920
(2014a) Standard Specification for
Elastomeric Joint Sealants
ASTM D2000
(2012) Standard Classification System for
Rubber Products in Automotive Applications
ASTM E1
(2014) Standard Specification for ASTM
Liquid-in-Glass Thermometers
ASTM F1120
(1987; R 2015) Standard Specification for
Circular Metallic Bellows Type Expansion
Joints for Piping Applications
ASTM F147
(1987; R 2009) Standard Test Method for
Flexibility of Non-Metallic Gasket Material
ASTM F568M
(2007) Standard Specification for Carbon
and Alloy Steel Externally Threaded Metric
Fasteners
FLUID SEALING ASSOCIATION (FSA)
FSA-0017
(1995e6) Standard for Non-Metallic
Expansion Joints and Flexible Pipe
Connectors Technical Handbook
INSTITUTE OF ENVIRONMENTAL SCIENCES AND TECHNOLOGY (IEST)
IEST-STD-CC1246
(2013; Rev E) Product Cleanliness Levels
and Contamination Control Program
MANUFACTURERS STANDARDIZATION SOCIETY OF THE VALVE AND FITTINGS
INDUSTRY (MSS)
MSS SP-104
(2012) Wrought Copper Solder Joint
Pressure Fittings
MSS SP-43
(2013) Wrought Stainless Steel
Butt-Welding Fittings
MSS SP-58
(1993; Reaffirmed 2010) Pipe Hangers and
Supports - Materials, Design and
SECTION 40 18 00.00 40
Page 7
Manufacture, Selection, Application, and
Installation
MSS SP-67
(2011) Butterfly Valves
MSS SP-69
(2003; Notice 2012) Pipe Hangers and
Supports - Selection and Application (ANSI
Approved American National Standard)
MSS SP-72
(2010a) Ball Valves with Flanged or
Butt-Welding Ends for General Service
MSS SP-80
(2013) Bronze Gate, Globe, Angle and Check
Valves
MSS SP-83
(2014) Class 3000 Steel Pipe Unions Socket
Welding and Threaded
MSS SP-86
(2014) Guidelines for Metric Data in
Standards for Valves, Flanges, Fittings
and Actuators
NATIONAL AERONAUTICS AND SPACE ADMINISTRATION (NASA)
RCBEA GUIDE
(2004) NASA Reliability Centered Building
and Equipment Acceptance Guide
SOCIETY OF AUTOMOTIVE ENGINEERS INTERNATIONAL (SAE)
SAE AMS-C-6183
(2013; Rev A) Cork and Rubber Composition
Sheet; for Aromatic Fuel and Oil Resistant
Gaskets
U.S. DEPARTMENT OF DEFENSE (DOD)
MIL-PRF-25567
(1998; Rev E; Notice 1 2005; Notice 2
2010; Notice 3 2015) Leak Detection
Compound, Oxygen Systems (Metric)
U.S. GENERAL SERVICES ADMINISTRATION (GSA)
FS FF-S-325
1.2
(Basic; Int Amd 3; Notices 3, 4) Shield,
Expansion; Nail, Expansion; and Nail,
Drive Screw (Devices, Anchoring, Masonry)
SUBMITTALS
**************************************************************************
NOTE: Review Submittal Description (SD) definitions
in Section 01 33 00 SUBMITTAL PROCEDURES and edit
the following list to reflect only the submittals
required for the project.
The Guide Specification technical editors have
designated those items that require Government
approval, due to their complexity or criticality,
with a "G." Generally, other submittal items can be
reviewed by the Contractor's Quality Control
System. Only add a “G” to an item, if the submittal
SECTION 40 18 00.00 40
Page 8
is sufficiently important or complex in context of
the project.
For submittals requiring Government approval on Army
projects, a code of up to three characters within
the submittal tags may be used following the "G"
designation to indicate the approving authority.
Codes for Army projects using the Resident
Management System (RMS) are: "AE" for
Architect-Engineer; "DO" for District Office
(Engineering Division or other organization in the
District Office); "AO" for Area Office; "RO" for
Resident Office; and "PO" for Project Office. Codes
following the "G" typically are not used for Navy,
Air Force, and NASA projects.
An "S" following a submittal item indicates that the
submittal is required for the Sustainability
Notebook to fulfill federally mandated sustainable
requirements in accordance with Section 01 33 29
SUSTAINABILITY REPORTING.
Choose the first bracketed item for Navy, Air Force
and NASA projects, or choose the second bracketed
item for Army projects.
**************************************************************************
Government approval is required for submittals with a "G" designation;
submittals not having a "G" designation are [for Contractor Quality Control
approval.][for information only. When used, a designation following the
"G" designation identifies the office that will review the submittal for
the Government.] Submittals with an "S" are for inclusion in the
Sustainability Notebook, in conformance to Section 01 33 29 SUSTAINABILITY
REPORTING. Submit the following in accordance with Section 01 33 00
SUBMITTAL PROCEDURES:
SD-02 Shop Drawings
Detail Drawings[; G[, [____]]]
SD-03 Product Data
Aboveground Piping Materials[; G[, [____]]]
Valves[; G[, [____]]]
Supporting Elements[; G[, [____]]]
Pressure Gages[; G[, [____]]]
Thermometers[; G[, [____]]]
Hex-Bolts[; G[, [____]]]
SD-06 Test Reports
Hydrostatic Tests[; G[, [____]]]
Leakage Tests[; G[, [____]]]
SECTION 40 18 00.00 40
Page 9
SD-07 Certificates
Aboveground Piping Materials[; G[, [____]]]
Valves[; G[, [____]]]
Supporting Elements[; G[, [____]]]
Pressure Gages[; G[, [____]]]
Thermometers[; G[, [____]]]
1.3
QUALITY ASSURANCE
Submit detail drawings. Include the manufacturer's design and construction
calculations, the forces required to obtain rated axial and lateral
movements, installation criteria, anchor and guide requirements, and all
other pertinent data required for evaluation of proposed equipment. Ensure
drawings specifically call out the procedures to be followed and provisions
required to protect expansion joints during specified testing operations.
1.3.1
Predictive Testing and Inspection Technology Requirements
**************************************************************************
NOTE: The Predictive Testing and Inspection (PT&I)
tests prescribed in Section 01 86 12.07 40
RELIABILITY CENTERED ACCEPTANCE FOR MECHANICAL
SYSTEMS are MANDATORY for all [NASA] [_____] assets
and systems identified as Critical, Configured, or
Mission Essential. If the system is non-critical,
non-configured, and not mission essential, use sound
engineering discretion to assess the value of adding
these additional test and acceptance requirements.
See Section 01 86 12.07 40 RELIABILITY CENTERED
ACCEPTANCE FOR MECHANICAL SYSTEMS for additional
information regarding cost feasibility of PT&I.
**************************************************************************
This section contains systems and/or equipment components regulated by
NASA's Reliability Centered Building and Equipment Acceptance Program.
This program requires the use of Predictive Testing and Inspection (PT&I)
technologies in conformance with RCBEA GUIDE to ensure building equipment
and systems installed by the Contractor have been installed properly and
contain no identifiable defects that shorten the design life of a system
and/or its components. Satisfactory completion of all acceptance
requirements is required to obtain Government approval and acceptance of
the Contractor's work.
Perform PT&I tests and provide submittals as specified in Section
01 86 12.07 40 RELIABILITY CENTERED ACCEPTANCE FOR MECHANICAL SYSTEMS.
SECTION 40 18 00.00 40
Page 10
PART 2
2.1
PRODUCTS
COMPONENTS
2.1.1
VALVES
2.1.1.1
Ball Valves, Vacuum (BAVV)
Provide the following:
a.
Ball valves conforming to MSS SP-72 Style [1] [3], UL approved for
certain compressed gases and a pressure rating of not less than 1210
kilopascal at 93 degrees C 175 psi at 200 degrees F; and certified
suitable for leaktight service under a vacuum of 2 millimeters of
mercury absolute.
b.
Valve bodies in sizes DN50 2-inch iron pipe size (ips) and smaller,
screwed-end-connection type, constructed of Class A copper alloy.
c.
Valve bodies in sizes DN75 2-1/2-inch ips and larger with
flanged-end-connection, constructed of Class [D] [E] [F] material,
unless otherwise specified.
d.
Balls and stems of valves DN50 2-inch ips and smaller, made with
manufacturer's standard Class A copper alloy with 900 Brinell hard
chrome-plating finish or Class C corrosion-resistant steel alloy with
hard chrome-plating. Electroless nickel-plating is acceptable.
e.
Balls and stems of valves DN75 2-1/2-inch ips and larger made with
manufacturer's standard Class C corrosion-resistant steel alloy with
hard chrome-plating. In valves DN150 6-inch ips and larger, balls may
be Class D with 900 Brinell hard chrome-plating. Electroless
nickel-plating is acceptable.
Ensure valves are suitable for flow from either direction and sealed
tightly in either direction, with full pipe size flow areas where noted.
Valves with ball seats kept in place by spring washers are not acceptable.
Ensure seats and seals are filled tetrafluoroethylene or manufacturer's
standard material for the specified service.
Provide valve with body construction such that:
a.
Torque from a pipe with valve installed does not tend to disassemble
the valve by stripping setscrews or by loosening body end inserts or
coupling nuts.
b.
Valve body resists torque from a pipe by a one-piece body between end
connections or by bolts in shear where body is of mating flange or
surface bolted construction.
2.1.1.2
Butterfly Valves, Vacuum (BUVV)
**************************************************************************
NOTE: Review service temperature range prior to
selection of materials to ensure long elastomer life
under nonlubricated conditions.
The following is limited to valve sizes through
SECTION 40 18 00.00 40
Page 11
DN1050 42 inches. Show on drawings, temperature
range and negative (vacuum) and positive pressures
at which system will operate. Check for sonic
velocities. Coordinate with shaft selection. Mass
spectrometer tests utilizing helium should be
specified only if necessary with leak detector
sensitivity of at least 1 times 10 to the minus 6
cubic centimeter per second.
**************************************************************************
Provide butterfly valves conforming to MSS SP-67, and the following
requirements:
a.
Butterfly valves through DN500 20-inches - wafer type.
b.
Valve sizes larger than DN500 20-inches, - two-flange type for mounting
between specified flanges. Drilled and tapped holes at the valve
bearing areas are acceptable for valves larger than DN500 20-inches.
c.
Rated for indicated velocities, shutoff, and nonshock working pressure.
d.
Body - cast ferrous metal conforming to minimum requirements of
ASTM A126, Class B and to ASME B16.1 for body wall thickness.
Provide certification that:
a.
All sizes of valves as tested are suitable for leaktight service under
a vacuum of 2 millimeter of mercury absolute.
b.
Laying lengths of wafer valves conform to MSS SP-67.
c.
Laying lengths of flanged valves conform to AWWA C504, Table 3, and
MSS SP-86 short body length.
d.
Disk is free of external ribs and streamlined. Verify disk is
fabricated from cast ferrous or nonferrous alloys conforming to
ASTM A436, Type 2 copper-free (austenitic cast iron), ASTM A216/A216M,
Grade WCB (cast steel), ASTM A351/A351M, Grade CF8M
(corrosion-resistant steel), or ASTM B148, No. C95500 (aluminum bronze).
[ Where vacuum piping systems are corrosion-protected internally, ensure all
ferrous valve surfaces exposed to airstream are [corrosion-resistant
steel],[ electroplated][ flame-sprayed with a corrosion-resistant metal
such as aluminum, zinc, tin or cadmium]. Provide certification which
specifically states coating is suitable for the intended service.
] Provide shaft fabricated from AISI 300 series or 17-4 pH
corrosion-resistant steel, or nickel-copper alloy conforming to ASTM B164,
and may be one piece or stub-shaft type, with stub shafts extended into the
disk hub at least 1-1/2 shaft diameters. Verify the connection between the
valve shaft and disk is designed to transmit shaft torque equivalent to not
less than 75 percent of the torsional strength of the minimum required
shaft diameter. Ensure minimum nominal shaft diameter for all valves is in
accordance with the following list:
**************************************************************************
NOTE: Select the following based on AWWA C504,
Class 25A, and MSS SP-86 for normal service where
dynamic torque is not involved.
SECTION 40 18 00.00 40
Page 12
**************************************************************************
VALVE SIZE
MILLIMETER (DN)
SHAFT DIAMETER
MILLIMETER
VALVE SIZE
MILLIMETER (DN)
SHAFT DIAMETER
MILLIMETER
75
13
400
34
100
16
450
38
150
19
500
38
200
22
600
44
250
25
750
50
300
28
900
63
350
31
1050
72
VALVE SIZE
INCHES
SHAFT DIAMETER
INCHES
VALVE SIZE
INCHES
SHAFT DIAMETER
INCHES
3
1/2
16
1-3/8
4
5/8
18
1-1/2
6
3/4
20
1-1/2
8
7/8
24
1-3/4
10
1
30
2
12
1-1/8
36
2-1/2
14
1-1/4
42
2-7/8
**************************************************************************
NOTE: Select the following based on AWWA C504,
Class 75B, and MSS SP-86 where shaft diameters are
suitable for seating and calculated dynamic torque.
**************************************************************************
VALVE SIZE
MILLIMETER (DN)
SHAFT DIAMETER
MILLIMETER
VALVE SIZE
MILLIMETER (DN)
SHAFT DIAMETER
MILLIMETER
75
13
400
38
100
16
450
41
150
19
500
48
SECTION 40 18 00.00 40
Page 13
Provide turnbuckles, swing eyes, and clevises as required by support system
to accommodate pipe accessibility and adjustment for load and pitch.
2.1.2.6
Supplementary Steel
Where it is necessary to frame structural members between existing members
or where structural members are used in lieu of commercially rated
supports, design and fabricate such supplementary steel in accordance with
AISC 360.
2.1.3
Pressure Gages
Provide pressure gages conforming to ASME B40.100 and to requirements
specified herein, Type II, Class 1 (pressure); Class 2 (vacuum); or Class 3
(pressure-vacuum). Ensure pressure gage size is 90 millimeter 3-1/2-inches
nominal diameter, with a corrosion-resistant steel case conforming to any
of the AISI 300 series with an ASM No. 4 standard commercial polish or
better. Equip all gages with adjustable red marking pointer and damper
screw adjustment in inlet connection.
2.1.4
Thermometers
Provide thermometers conforming to ASTM E1; industrial pattern Type I,
Class 3. Ensure thermometers installed 1830 millimeter 6-feet or higher
above the floor have an adjustable angle body. Ensure scale is not less
than 175 millimeter 7-inches long, and case face is manufactured from
manufacturer's standard polished aluminum or AISI 300 series polished
corrosion-resistant steel. Indicate thermometer range. Provide
thermometers with nonferrous separable wells.
2.1.5
Bolting
Provide flange and general purpose bolting hex-bolts conforming to
ASTM F568M ASTM A307, Grade B; and heavy hex-nuts conforming to ASME B18.2.1
ASME B18.2.2. Square-head bolts and nuts are not acceptable.
2.2
MATERIALS
**************************************************************************
NOTE: Coordinate indicated and specified vacuum and
pressure ratings with test criteria.
**************************************************************************
2.2.1
Aboveground Piping Materials
Piping for Vacuum Systems To 100 Kpa 29.5 Inches Of Mercury Vacuum.
2.2.1.1
Black Carbon Steel
Pipe DN6 through DN30 1/8 inch through 1-1/2 inches: Schedule 40, furnace
butt weld, black carbon steel, conforming to ASTM A53/A53M, Type F.
Pipe DN50 through DN200 2- through 8-inches where indicated: Schedule 40,
seamless (Type 5) or electric (Type E) resistance-welded, black carbon
steel, conforming to ASTM A53/A53M, Grade B, Type [E] [S]. Grade A should
be used for permissible field bending.
Fittings DN50 2-inches and under: 1050 kilopascal 150-pounds per square
inch, gage (psig) working steam-pressure (wsp), banded, black malleable
SECTION 40 18 00.00 40
Page 19
iron, screwed, conforming to ASTM A197/A197M, ASTM A234/A234M and ASME B16.3.
Unions DN50 2-inches and under: 1724 kilopascal 250-psig wsp, female,
screwed, black malleable iron, with brass to iron seat and ground joint,
conforming to ASME B16.39 and MSS SP-83.
Couplings DN50 2-inches and under:
steel.
Standard weight, screwed, black carbon
Fittings DN65 2-1/2-inches and over: Steel, butt weld, conforming to
MSS SP-43, ASTM A234/A234M and ASME B16.9
Flanges DN65 2-1/2-inches and over: 1050 kilopascal 150-psig wsp, forged
steel, welding neck, to match pipe wall thickness, conforming to ASME B16.5
and ASTM A694/A694M.
Grooved pipe couplings and fittings DN65 2-1/2-inches and over: Use of
malleable iron couplings and fittings conforming to requirements specified
under "Grooved Pipe Couplings and Fittings" in this section is optional.
2.2.1.2
Galvanized Carbon Steel
Pipe DN6 through DN40 1/8- inch through 1-1/2-inches: Schedule 40, furnace
butt weld, black carbon steel, conforming to ASTM A53/A53M, Type F.
Pipe DN50 through DN200 2- through 8-inches where indicated: Schedule 40,
seamless or electric resistance welded, galvanized steel, conforming to
ASTM A53/A53M, Grade B, Type E or S.
Fittings DN200 and under: 1050 kilopascal 8-inches and under: 150-psig
wsp, banded, galvanized, malleable iron, screwed, conforming to
ASTM A197/A197M, ASTM A234/A234M and ASME B16.3.
Unions DN50 and under: 2068 kilopascal 2-inches and under: 300-psig wsp,
female, screwed, galvanized, malleable iron with brass to iron seat and
ground joint conforming to ASME B16.39.
2.2.1.3
Spiral Welded Pipe
**************************************************************************
NOTE: Type SWP wall thickness is based on stress
values of 86.2 Megapascal 12,500 pounds per square
inch (psi), 85 percent of external average collapse
pressure with a safety factor of 4.
**************************************************************************
Pipe[ DN150 through DN900 6- through 36-inches:] Electric fusion welded,
carbon steel, conforming to ASTM A139/A139M, Grade B, with wall thickness
as follows:
NOMINAL
DIAMETER
MILLIMETER
MINIMUM
WALL THICKNESS
MILLIMETER
300
3.18
350
3.58
SECTION 40 18 00.00 40
Page 20
shaft material. Provide operating end of the shaft with dual inboard
bearings or a single inboard and an outboard bearing in or beyond the
operator.
Provide valves larger than DN500 20-inches with thrust bearings set to hold
disk firmly in place.
Provide locking feature to make valve tamperproof where indicated.
Provide manual nonchain-operated valves through DN200 8 inches with not
less than nine-position-level lock handles not exceeding 450 millimeter 18
inches in length.
Manual valves DN250 10-inches and larger, or smaller if the application
torque exceeds a pull of 110 Newton-meter 80 foot-pounds or if so
indicated, provide with gear operators.
Where valves are indicated to be chain operated, equip all sizes with gear
operators, and a chain length suitable for proper storage and operation.
Use worm-gear type gear operators. Ensure gears are hob-cut and totally
enclosed in a cast-iron housing suitable for grease or oil-flood
lubrication. Support gears and gear shafts on bronze or
corrosion-resistant, lubricated bearings. Size operators to provide the
required torque, static or dynamic, with a maximum manual pull of 110
Newton-meter 80 foot-pounds on the handwheel or chain wheel.
For modulating or remotely actuated two-position service valves, where
indicated, provide with pneumatic operators, pilot positioners, valve
position indicators, and boosters and relays where necessary. Note
operating air-supply pressure.
Ensure maximum load on a pneumatic operator does not exceed 85 percent of
rated operator capacity.
2.1.1.3
Diaphragm Control and Instrument Valves (DCIV)
Provide forged brass body diaphragm valves in sizes DN8 and DN10 1/4- and
3/8-inch with reinforced tetrafluoroethylene diaphragm, an AISI 300 series
corrosion-resistant steel spring, and a round phenolic handle. Fit handle
with ISA color code disks.
2.1.1.4
Gage Cocks (GC)
Ensure gage cocks are T-head or lever handle ground key type with washer
and screw, constructed of polished ASTM B62 bronze and rated for 862
kilopascal 125-psi saturated steam service. Ensure end connections suit
the service, with or without union and nipple.
2.1.1.5
Globe and Angle Valves (GLV And ANV)
Ensure globe and angle valves DN50 2-inches and smaller, conform to
MSS SP-80 and to requirements specified herein. Provide union ring bonnet
valves, screwed end type with backseating stem. Ensure disk is free to
swivel on the stem in all valve sizes and have a fiberglass filled,
tetrafluoroethylene composition seating surface. Provide woven
non-asbestos fiber packing, impregnated with not less than 25 percent by
weight, of tetrafluoroethylene resin.
SECTION 40 18 00.00 40
Page 16
2.1.2
Supporting Elements
**************************************************************************
NOTE: Type SWP piping horizontal and vertical
piping attachments and mill-provided reinforcement
of piping should be detailed to suit project
conditions. Support spacing should be based on an
allowable bending stress of approximately 20700
kilopascal (3000 psi), 3,000 pounds per square inch,
desired deflections, and natural frequency of piping
when connected to pulsating equipment.
**************************************************************************
2.1.2.1
Supports
Provide all necessary piping system components and miscellaneous supporting
elements, including but not limited to, building structure attachments,
supplementary steel, hanger rods, stanchions and fixtures, vertical pipe
attachments, pipe attachments, anchors, guides, shock absorbers, and
variable and constant supports. Ensure all supporting elements are
suitable for stresses imposed by system pressures and temperatures and
natural and other external forces. Refer to Section 23 05 48.00 40
VIBRATION AND SEISMIC CONTROLS FOR HVAC PIPING AND EQUIPMENT for vibration
isolation considerations.
Provide UL approved or listed supporting elements conforming to
requirements of ASME B31.1, MSS SP-58, and MSS SP-69.
"Type" devices specified are defined as MSS standards.
[ Horizontal and vertical piping attachments and certain other details for
piping systems utilizing variable wall thickness, Type SWP spiral welded
pipe materials are as noted.
]2.1.2.2
a.
Building Structure Attachments
Anchor Devices, Concrete And Masonry
Ensure anchor devices conform to requirements of AASHTO M 314, and
FS FF-S-325 FS FF-S-325, [Group I] [Group II, Type 2, Class 2, Style [1]
[2]] [Group III] [Group VIII].
Provide cast-in, floor-mounted equipment anchor devices with adjustable
positions.
Ensure masonry anchor devices are built-in.
Do not use powder-actuated anchoring devices to support any mechanical
systems components.
b.
Beam Clamps
Use center loading beam clamps, Type [21] [28] [29] [30], UL listed,
catalogued and low rated, commercially manufactured products.
[ c.
C-Clamps
**************************************************************************
NOTE: C-clamps, as a means of attaching hangers to
SECTION 40 18 00.00 40
Page 17
structural steel, should be avoided. Where used,
consider vibration forces and single or accumulated
load and resultant moment on structural steel.
**************************************************************************
C-clamps may be used to support piping sizes DN40 1-1/2-inches and
smaller. Provide FM approved and UL listed C-clamps with hardened cup tip,
setscrew, locknut, and retaining strap. Ensure retaining strap section is
not less than 3 by 25 millimeter 1/8 by 1 inch. Beam flange thickness to
which clamps are attached cannot exceed 15.2 millimeter 0.60 inch.
][d.
Concrete Inserts
Construct concrete inserts in accordance with MSS SP-58 for Type 18 and
MSS SP-69. When applied to piping in sizes DN50 2-inch ips and larger and
where otherwise required by imposed loads, insert and wire a 300 millimeter
length of 15 millimeter 1-foot length of 1/2-inch reinforcing rod through
wing slots. Approved proprietary-type continuous inserts may be similarly
used.
]2.1.2.3
Horizontal Pipe Attachments
In lieu of separate hangers, a detail drawing of proposed trapeze hangers
with turnbuckles on rods and a solid or split-ring clamp for each pipe may
be submitted for approval.
Single pipes
a.
Support piping in sizes to and including DN50 2-inch ips by Type 6
solid malleable iron pipe rings, except use split-band-type rings in
sizes up to DN25 1-inch ips.
b.
Support piping in sizes through DN200 8-inch ips inclusive by Types [1]
[3] [4] attachments.
c.
Ensure pipe rolls are Type 41 or Type 49.
d.
Provide spring supports in accordance with referenced codes and
standards. Submit complete shop drawing data for approval.
Parallel pipes
a.
Use trapeze hangers fabricated from approved structural steel shapes,
with U-bolts, in congested areas and where multiple pipe runs occur.
Ensure structural steel shapes conform to supplementary steel
requirements or the support may be commercially available, proprietary
design, rolled steel.
2.1.2.4
Vertical Pipe Attachments
Use Type 8 vertical pipe attachments, single pipes.
2.1.2.5
Hanger Rods and Fixtures
Use only circular cross section rod hangers to connect building structure
attachments to pipe support devices. Pipe straps, or bars of equivalent
strength may be used for hangers only where approved by the Contracting
Officer.
SECTION 40 18 00.00 40
Page 18
Provide turnbuckles, swing eyes, and clevises as required by support system
to accommodate pipe accessibility and adjustment for load and pitch.
2.1.2.6
Supplementary Steel
Where it is necessary to frame structural members between existing members
or where structural members are used in lieu of commercially rated
supports, design and fabricate such supplementary steel in accordance with
AISC 360.
2.1.3
Pressure Gages
Provide pressure gages conforming to ASME B40.100 and to requirements
specified herein, Type II, Class 1 (pressure); Class 2 (vacuum); or Class 3
(pressure-vacuum). Ensure pressure gage size is 90 millimeter 3-1/2-inches
nominal diameter, with a corrosion-resistant steel case conforming to any
of the AISI 300 series with an ASM No. 4 standard commercial polish or
better. Equip all gages with adjustable red marking pointer and damper
screw adjustment in inlet connection.
2.1.4
Thermometers
Provide thermometers conforming to ASTM E1; industrial pattern Type I,
Class 3. Ensure thermometers installed 1830 millimeter 6-feet or higher
above the floor have an adjustable angle body. Ensure scale is not less
than 175 millimeter 7-inches long, and case face is manufactured from
manufacturer's standard polished aluminum or AISI 300 series polished
corrosion-resistant steel. Indicate thermometer range. Provide
thermometers with nonferrous separable wells.
2.1.5
Bolting
Provide flange and general purpose bolting hex-bolts conforming to
ASTM F568M ASTM A307, Grade B; and heavy hex-nuts conforming to ASME B18.2.1
ASME B18.2.2. Square-head bolts and nuts are not acceptable.
2.2
MATERIALS
**************************************************************************
NOTE: Coordinate indicated and specified vacuum and
pressure ratings with test criteria.
**************************************************************************
2.2.1
Aboveground Piping Materials
Piping for Vacuum Systems To 100 Kpa 29.5 Inches Of Mercury Vacuum.
2.2.1.1
Black Carbon Steel
Pipe DN6 through DN30 1/8 inch through 1-1/2 inches: Schedule 40, furnace
butt weld, black carbon steel, conforming to ASTM A53/A53M, Type F.
Pipe DN50 through DN200 2- through 8-inches where indicated: Schedule 40,
seamless (Type 5) or electric (Type E) resistance-welded, black carbon
steel, conforming to ASTM A53/A53M, Grade B, Type [E] [S]. Grade A should
be used for permissible field bending.
Fittings DN50 2-inches and under: 1050 kilopascal 150-pounds per square
inch, gage (psig) working steam-pressure (wsp), banded, black malleable
SECTION 40 18 00.00 40
Page 19
iron, screwed, conforming to ASTM A197/A197M, ASTM A234/A234M and ASME B16.3.
Unions DN50 2-inches and under: 1724 kilopascal 250-psig wsp, female,
screwed, black malleable iron, with brass to iron seat and ground joint,
conforming to ASME B16.39 and MSS SP-83.
Couplings DN50 2-inches and under:
steel.
Standard weight, screwed, black carbon
Fittings DN65 2-1/2-inches and over: Steel, butt weld, conforming to
MSS SP-43, ASTM A234/A234M and ASME B16.9
Flanges DN65 2-1/2-inches and over: 1050 kilopascal 150-psig wsp, forged
steel, welding neck, to match pipe wall thickness, conforming to ASME B16.5
and ASTM A694/A694M.
Grooved pipe couplings and fittings DN65 2-1/2-inches and over: Use of
malleable iron couplings and fittings conforming to requirements specified
under "Grooved Pipe Couplings and Fittings" in this section is optional.
2.2.1.2
Galvanized Carbon Steel
Pipe DN6 through DN40 1/8- inch through 1-1/2-inches: Schedule 40, furnace
butt weld, black carbon steel, conforming to ASTM A53/A53M, Type F.
Pipe DN50 through DN200 2- through 8-inches where indicated: Schedule 40,
seamless or electric resistance welded, galvanized steel, conforming to
ASTM A53/A53M, Grade B, Type E or S.
Fittings DN200 and under: 1050 kilopascal 8-inches and under: 150-psig
wsp, banded, galvanized, malleable iron, screwed, conforming to
ASTM A197/A197M, ASTM A234/A234M and ASME B16.3.
Unions DN50 and under: 2068 kilopascal 2-inches and under: 300-psig wsp,
female, screwed, galvanized, malleable iron with brass to iron seat and
ground joint conforming to ASME B16.39.
2.2.1.3
Spiral Welded Pipe
**************************************************************************
NOTE: Type SWP wall thickness is based on stress
values of 86.2 Megapascal 12,500 pounds per square
inch (psi), 85 percent of external average collapse
pressure with a safety factor of 4.
**************************************************************************
Pipe[ DN150 through DN900 6- through 36-inches:] Electric fusion welded,
carbon steel, conforming to ASTM A139/A139M, Grade B, with wall thickness
as follows:
NOMINAL
DIAMETER
MILLIMETER
MINIMUM
WALL THICKNESS
MILLIMETER
300
3.18
350
3.58
SECTION 40 18 00.00 40
Page 20
NOMINAL
DIAMETER
MILLIMETER
MINIMUM
WALL THICKNESS
MILLIMETER
400
4.37
450
4.78
550
5.56
600
6.35
700
7.14
750
7.92
900
9.53
NOMINAL
DIAMETER
INCHES
MINIMUM
WALL THICKNESS
INCH
12
0.125
14
0.141
16
0.172
18
0.188
22
0.219
24
0.250
28
0.281
30
0.312
36
0.375
Refer to paragraph SUPPORTING ELEMENTS INSTALLATION for additional
requirements.
Fittings
(all sizes)
Specify materials and thicknesses
for pipe. Ensure fittings configuration and dimensions conform to
AWWA C208, Tables 1 and 2
and MSS SP-86
Ensure fittings are butt weld end type
13789 kilopascal, 2,000 pounds per square inch (psi),
forged carbon steel, threaded
half coupling, conforming to ASTM A105/A105M
and ASME B16.11
Re-tap threads after welding.
SECTION 40 18 00.00 40
Page 21
Flanges
(all sizes)
Forged carbon steel, slip-on type, conforming to ASTM A181/A181M, Class 60 or 70,
and AWWA C207, Class D, and ASTM A105/A105M
concentric serrated finish
[Grooved couplings
Refer to paragraph GROOVED PIPE COUPLINGS
AND FITTINGS.
Ensure pipe ends have welded collars
grooved to fit couplings, fabricated
from ASTM A53/A53M pipe]
2.2.2
Control and Instrumentation System Tubing
Type CPR-C&I:
Copper
Tubing
All sizes DN8 1/4-inch minimum: Hard drawn or annealed, seamless
copper, conforming to ASTM B280, No. C12200
Fittings
All sizes:
MSS SP-104
Solder joint, wrought copper, conforming to ASME B16.22 and
Ball sleeve compression type, rod or forged brass conforming to
SAE A 360 or SAE CA 377, UL-approved, with minimum pressure rating
of 1380 kilopascal at 38 degrees C 200 psi at 100 degrees F
Solder
95-5 tin-antimony, alloy Sb5, conforming to AWS WHB-2.9.
2.2.3
Grooved Pipe Couplings and Fittings
Provide couplings with a housing fabricated in two or more parts of
malleable iron castings; with molded synthetic rubber coupling gasket,
conforming to requirements of ASTM D2000. Ensure coupling bolts are oval
neck track head type with hexagonal heavy nuts, conforming to ASTM A183.
Provide pipe fittings used with couplings fabricated of malleable iron
castings. Where a manufacturer's standard size malleable iron fitting
pattern is not available, use fabricated fittings.
Ensure fittings are fabricated from Schedule 40 or 9.53 millimeter
0.375-inch wall ASTM A53/A53M, seamless steel pipe; long-radius seamless
welding fittings with wall thickness to match pipe, conforming to
ASTM A234/A234M and ASME B16.9 and MSS SP-43.
2.2.4
Metallic Expansion Joints
**************************************************************************
NOTE: This specification does not include slip type
expansion joints or ball joints.
**************************************************************************
Provide packless bellows type expansion joints conforming to ASTM F1120,
except as otherwise modified or supplemented by requirements.
SECTION 40 18 00.00 40
Page 22
Provide metallic bellows designed in accordance with ASME B31.3, Appendix
X, and Standards of the Expansion Joint Manufacturers Association.
Ensure expansion joints are [Type I, Class 1.] [Type I, Class 2.] [Type II,
Class 1.] [Type II, Class 2.] [tied, hinged, or gimbaled.] Verify joints
are designed and constructed to absorb all movement of the pipe sections in
which they are installed with no detrimental effect on the pipe or
supporting structure.
[ Verify operating pressures and temperatures for each joint are as shown.
][Provide joints which are designed and rated for service with vacuum to 2
millimeter of mercury absolute, pressures to 345 kilopascal 50 psig, and
temperatures to 121 degrees C 250 degrees F.
][Provide joints which are designed and rated for service with vacuum to 2
millimeter of mercury absolute, pressures to 1050 kilopascal 150 psig, and
temperatures to 260 degrees C 500 degrees F.
] Provide joints designed with bursting strength in excess of four times
their rated pressure and are capable of withstanding hydrostatic tests of
1.5 times their rated pressure without leakage or distortion while held at
their uncompressed length, with a life expectancy of not less than 10,000
cycles.
Ensure movement capability of each joint exceeds calculated movement of
piping by [33] [_____] percent.
Provider bellows and internal sleeve material made from AISI 304[L]
corrosion-resistant steel. Use Type C-22 Hastelloy alloy for bellows
exposed to highly corrosive environments, such as those found within 1 mile
of the ocean or at a launch pad utilizing propellants with corrosive
exhaust products.
Ensure end connections are as indicated and require no field preparation
other than maintenance of cleanliness.
[ Ensure the butt weld end preparation of expansion joints conforms to the
same codes and standards requirements as applicable to the piping system
materials at the indicated joint location.
][Ensure flanges of flanged end expansion joints conform to the same codes
and standards requirements as are applicable to companion flanges specified
for the given piping system at the indicated joint location.
] Van stone flanges are not acceptable.
Provide joints 65 millimeter 2-1/2-inches and smaller with internal guides
and limit stops.
Provide joints 75 millimeter 3-inches and larger with removable external
covers, internal sleeves, and purging connection. Size sleeves to
accommodate lateral clearance required with minimum reduction of flow area,
using oversized bellows where necessary. When sleeve requires a gasket as
part of locking arrangement, provide a gasket made by the same
manufacturer. Joints without purging connections may be provided; however,
remove these from the line or not install until after cleaning operations
have been completed.
SECTION 40 18 00.00 40
Page 23
[ Provide cylindrical end portion of the reinforced bellows element with a
thrust sleeve of sufficient thickness to bring this portion within
applicable code allowable stress. Ensure sleeve provides 360-degree
support for the element and end reinforcing ring.
][Provide four expansion joints, with equidistant, permanent tram points
clearly marked on each joint end. Locate points to prevent obliteration
during installation. Ensure distance between tram points (indicating
installed lengths) are as noted. Overall dimension is subject to approval
by the Contracting Officer after joint installation.
] Provide expansion joints with adjustable clamps or yokes provided at
quarter points straddling the bellows. Set overall joint length by the
manufacturer to maintain joints in manufacturer's recommended position
during installation.
Clearly and legibly mark joints with the manufacturer's name or trademark
and serial number and with the size and series or catalogue number, bellows
material, and directional flow arrow.
Verify provisions are Level A of ASTM F1120, and packing provisions are
Level 8 of ASTM F1120.
2.2.5
Elastomer Caulk
Use two-component polysulfide or polyurethane base elastomer caulking
material conforming to ASTM C920.
2.2.6
Flashing
Provide flashing material meeting the following:
Lead
Ensure sheet lead conforms to ASTM B749 , Grade [B] [C] [D] and weigh
not less than 95 kilogram per square meter 4 pounds per square foot.
Copper
Ensure sheet copper conforms to ASTM B370 and weigh not less than 5
kilogram per square meter 16 ounces per square foot.
2.2.7
Flange Gaskets
**************************************************************************
NOTE: For average vacuum service application use
chloroprene, 60 to 65 shore a durometer hardness.
**************************************************************************
Provide the following flange gaskets:
Type A: Soft chloroprene sheet, 45 to 60 Shore A durometer hardness,
conforming to ASTM F147 and SAE AMS-C-6183, Type II, Class 2, Grade A.
Type B: Medium chloroprene sheet, 60 to 65 Shore A durometer hardness,
conforming to ASTM F147 and SAE AMS-C-6183, Type II, Class 2, Grade B.
Type C:
Firm chloroprene sheet, 70 to 80 Shore A durometer hardness,
SECTION 40 18 00.00 40
Page 24
NOTE: Because of the expansive force of compressed
air, pneumatic testing requires special precautions
and competent supervision to prevent injury and
damage should a failure occur.
**************************************************************************
Conduct pneumatic pressure tests utilizing dry, oil-free compressed [air]
[carbon dioxide] [nitrogen] for the system under test. Pressure test in
two stages, preliminary and acceptance.
Evacuate personnel from the area not directly involved in pneumatic
pressure testing of ferrous piping in excess of 34.5 kilopascal 5 psi.
Pressure testing of any system for any purpose includes preliminary testing
by applying internal pressures not in excess of 35 kilopascal 5 psi,
swabbing joints under test with standard high film-strength soap solution
conforming to MIL-PRF-25567, and observing for bubbles.
When testing reveals that leakage exceeds specified limits, isolate the
leaks, replace repaired defective materials where necessary, and retest the
system until specified requirements are complied with. Remake leaking
gasket joints with new gaskets and new flange bolting and discard used
bolting and gaskets. Remake leaking tubing joints with the new fittings
and new tube ends.
Only use standard piping flanges, plugs, caps, and valves for sealing off
piping for test purposes.
Remove components that would otherwise sustain damage due to test pressure
from piping systems during testing. Check piping system components such as
valves for proper operation under system test pressure.
[ Protect expansion joints against system pressures by suitable
movement-limiting devices.
] Add no test media to a system during a test for a period as specified or to
be determined by the Contracting Officer.
Duration of a test will be determined by the Contracting Officer. Test may
be terminated by direction of the Contracting Officer at any point during a
24-hour period after it has been determined that the permissible leakage
rate has not been exceeded.
3.2.2
Test Gages
[ Ensure pressure test gages conform to ASME B40.100 and have a dial diameter
of at least 125 millimeter 4-1/2 inches. Maximum permissible scale range
for a given pressure test is such that the pointer during a test has a
starting position at midpoint of the dial or within the middle third of the
scale range. Ensure a certification of accuracy and correction table bears
a date within 90 calendar days prior to test use, test gage number, and the
project number, unless otherwise approved by the Contracting Officer.
][Government will furnish vacuum test gages.
][Government will furnish pressure and vacuum test gages.
SECTION 40 18 00.00 40
Page 33
]3.2.3
Acceptance Pressure Testing
Test during steady-state ambient temperature conditions.
Test piping systems at 175 kilopascal 25 psi. Maintain test pressure for a
period of not less than 2 hours with no pressure drop.
Test control and instrumentation tubing systems at 210 kilopascal 30 psi.
Maintain test pressure for not less than 24 hours with no measurable
pressure drop.
3.2.4
Acceptance Vacuum Testing
**************************************************************************
NOTE: Prior to selection of the following test
criteria, review provisions to ensure suitability
for project application.
**************************************************************************
Evacuate piping system to a pressure of 13 millimeter 0.51 inches of
mercury, absolute. Operate each system at least three times during leakage
tests. Rate of pressure rise cannot exceed 0.8 millimeter 0.032 inches of
mercury per hour.
When leakage exceeds the allowable rate test suspected area utilizing a
helium mass spectrometer in either the detector-probe or tracer-probe
configuration.
a.
Detector Probe Method: Internally pressurize test piece with helium
gas and use a mass spectrometer (tuned for helium) to probe the
exterior surface to spatially isolate the leak. Employ a flexible line
to scan a capillary tube over the surface to detect the leak.
b.
Tracer Probe Method: Evacuate the test piece and flood the suspect
area in helium gas. Simultaneously,use a helium mass spectrometer to
examine the atmosphere within the test piece to determine the extent to
which helium is drawn into the evacuated volume. For more accurate
measurements, the suspect area can be jacketed and the area between the
jacket and the test piece can be filled with 90 to 100-percent pure
helium gas as the testing is conducted.
-- End of Section --
SECTION 40 18 00.00 40
Page 34
Before acceptance of an expansion joint installation, cycle each joint from
"zero" condition to maximum load not less than five times; check the joint,
piping, and equipment alignment each time in the presence of the
Contracting Officer.
[ Lubricate guides located in lines with expansion joints with silicone
molybdenum disulfide lubricant.
]3.1.2
Joints
Ream pipe ends before joint connections are made.
Make up screwed joints with joint compound.
Apply joint compounds to the male thread only, and exercise care to prevent
compound from reaching the interior of the pipe.
Threads will be inspected by the Contracting Officer at midpoint of a cut
for chaser alignment, proper grinding, thread track, chatter, and for
coolant and lubricant effectiveness.
Provide unions or flanges wherever required to permit convenient removal of
equipment, valves, and piping accessories from the piping system.
Assemble flanged joints with appropriate flanges, gaskets, and bolting.
Ensure clearance between flange faces is such that the connections can be
gasketed and bolted tight without imposing unaccounted strain on the piping
system, and that flange faces are parallel and the bores concentric; center
gaskets on the flange faces without projecting into the bore. Lubricate
bolting with oil and graphite before assembly to ensure uniform bolt
stressing. Draw up and tighten flange bolts in staggered sequence in order
to prevent unequal gasket compression and deformation of the flanges.
Wherever a flange with a raised face is joined to a companion flange with a
flat face, machine down the raised face to a smooth matching surface and
use a full face gasket. After the piping system has been tested,
re-tighten all bolting. Only use hex-head nuts and bolts. Use only fresh
stock gasket material, 1.6 millimeter 1/16-inch thick.
Ensure all field-welded joints conform to AWS WHB-2.9 and ASME B31.1.
3.1.3
Control and Instrument Air Piping
Use hard core tubing in all exposed areas and either hard drawn or annealed
if concealed.
Provide wrought copper solder joint type fittings for supply system copper
tubing except at connection to apparatus where specified brass mechanical
and ips thread adapter fittings may be used. Tool-made bends in lieu of
fittings are acceptable. Neatly nest all multiple tube runs.
Mechanically attach tubing to supporting surfaces.
adhesives are not acceptable.
Supports using
Provide rigid copper tubing horizontal supports for less than three tubes
using 25 by 10 millimeter 1- by 3/8-inch metal channel. Provide
proprietary metal tube race for three or more tubes.
[ Anneal and protect copper tubing runs embedded in concrete by metallic or
plastic electric conduit.
SECTION 40 18 00.00 40
Page 27
][Ensure copper tubing runs in soil are jointless and protected by 0.3048
millimeter 12-mil thick bituminous coating or equivalent PVC tape wrapping.
] Make tubing penetrations of concrete surfaces with minimum DN25 1-inch ips,
Schedule 40 rigid unplasticized PVC pipe sleeves, except that multitube
harnesses DN40 1-1/2-inches outside diameter and larger need not have
additional protection. Extend sleeve 150 millimeter 6-inches above floors
and 25 millimeter 1-inch below grade surface of slabs. Where water- or
vapor-barrier sealing is required, apply 13 millimeter 1/2-inch deep
elastomer caulk to surfaces cleaned of oil and other deleterious substances.
Sequentially purge tubing with dry, oil-free compressed air to rid system
of impurities generated during joint making and installation and
atmospheric moisture before connecting control instruments.
3.1.4
Supporting Elements Installation
Provide supporting elements in accordance with the requirements of
referenced codes and standards.
Hang piping from building construction.
or from other pipe.
Do not hang piping from roof deck
Welding and cutting of building structural steel is prohibited.
Use approved cast-in-concrete inserts or built-in anchors for attachment to
building construction concrete. Where attachment by either of above
methods is not practical, specified masonry anchor alternate devices may be
used upon receipt of written approval of an alternate method from the
Contracting Officer.
Embed fish plates in the concrete to transmit hanger loads to the
reinforcing steel where hanger rods exceed 22 millimeter 7/8-inch in
diameter.
Construct masonry anchors selected for overhead applications of ferrous
materials only.
Install masonry anchors of AASHTO M 314 and FS FF-S-325, Group I; Group II,
Type 2, Class 2, Style 1, or Style 2; or Group VIII in rotary,
nonpercussion, electrically drilled holes. Self-drilling anchors (Group
III) may be used provided masonry drilling is done with electric hammers
selected and applied in a manner that precludes concrete spalling or
cracking (visible or invisible). Pneumatic tools are not allowed.
Select percussive action, electric hammers, and combination rotary-electric
hammers used for the installation of self-drilling anchors in accordance
with the following guide:
a.
Tool for anchor devices, nominal sizes 6 through 13 millimeter 1/4through 1/2-inch, may be hammer type only or combination rotary-hammer
type and rated at load to draw not more than 5.0 to 5.5 amperes when
operating on 120-volt 60-hertz power.
b.
Tool for anchor devices, nominal sizes 16 millimeter 5/8-inch and
larger, hammer-type only, rated at load to draw not more than 8.0
amperes when operating on 120-volt, 60-hertz power. Ensure combination
rotary-hammer tools on the same power supply have a full load current
SECTION 40 18 00.00 40
Page 28
rating not to exceed 10 amperes.
Size inserts and anchors for the total stress to be applied with a safety
factor as required by applicable codes, but in no case less than 4.
Insert anchor devices into concrete sections not less than twice the
overall length of the device and locate not less than the following
distance from any side or end edge or centerline of adjacent anchor service:
Anchor Bolt Size
M Designation
6
8
10
13
16
19
22
Minimum Edge
Space (millimeter)* 90
85
105
130
150
180
200
Anchor Bolt Size
(inches)
Minimum Edge
Space (inches)*
1/4
5/16
3-1/2 3-1/4
3/8
1/2
5/8
3/4
7/8
4
5
6
7
8
*Except where manufacturer requires greater distance.
In special circumstances, upon prior written approval of the Contracting
Officer, center-to-center distance may be reduced to 50 percent of given
distance provided the load on the device is reduced in direct proportion to
the reduced distance.
Run all piping parallel with the lines of the building unless otherwise
indicated. Space and install piping and components so that a threaded pipe
fitting may be removed between adjacent pipes and so that there is not less
than 13 millimeter 1/2-inch of clear space between the finished surface and
adjacent piping. Arrange hangers on different adjacent service lines
running parallel with each other in line with each other and parallel to
the lines of the building.
Place identical service systems piping, where practicable, at same
elevation and hung on trapeze hangers adjusted for proper pitch.
Spacing of trapeze hangers where piping is grouped in parallel runs is the
closest interval required for any size pipe supported.
Where it is necessary to avoid any transfer of load from support to support
or onto connecting equipment, use constant support type pipe hangers.
Weld anchors and alignment guides incorporated in piping systems to the
piping and attached to the building structure in accordance with
requirements specified herein or as approved by the Contracting Officer.
Suitably brace piping against reaction, sway, and vibration. Bracing
consists of hydraulic and spring devices, brackets, anchor chairs, rods, or
structural steel, or any suitable combination thereof.
Locate pipe lines, when supported from roof purlins, not greater than
one-sixth of the purlin span from the roof truss. Do not exceed 1780 Newton
400 pounds load per hanger when support is from a single purlin or 3560
Newton 800 pounds when hanger load is applied to purlins halfway between
purlins by means of auxiliary support steel. When support is not halfway
between purlins, ensure the allowable hanger load is the product of 400
SECTION 40 18 00.00 40
Page 29
times the inverse ratio of the longest distance to purlin-to-purlin service.
When the hanger load exceeds the above limits, furnish and install
reinforcing of the roof purlin(s) or additional support beam(s). When an
additional beam is used, the beam bears on the top chord of the roof
trusses, and the bearing is over gusset plates of top chord. Stabilize
beam by connection to roof purlin along bottom flange.
Purlins used to support fire protection sprinkler lines, electrical
lighting fixtures, and electrical power duct or cable tray are considered
fully loaded; provide supplemental reinforcing for these purlins or
auxiliary support steel.
Install hangers and supports for piping at specified intervals at locations
not more than 900 millimeter 3 feet from the ends of each runout and not
over 25 percent of specified interval from each change in direction of
piping.
Establish the load rating for all pipe hangers based on weight and forces
imposed on all lines. Ensure the deflection per span does not exceed slope
gradient of pipe.
[ Ensure support provisions and support spacing for Type SWP materials is in
accordance with the manufacturer's recommendations for the application.
] Ensure Schedule 40 and heavier pipe supports are in accordance with the
following minimum rod size and maximum allowable hanger spacing;
concentrated loads reduce the allowable span proportionately:
PIPE SIZE
MILLIMETER (DN)
ROD SIZE
MILLIMETER (DN)
STEEL PIPE
MILLIMETER (DN)
Up to 25
10.0
2438
32 to 40
10.0
2048
50
10.0
3658
65 to 90
13.0
3658
100 to 125
16.0
4877
150
19.0
4877
200
22.0
6096
ROD SIZE
(INCHES)
STEEL PIPE
(FEET)
Up to 1
3/8
8
1-1/4 to 1-1/2
3/8
10
2
3/8
12
PIPE SIZE
(INCHES)
SECTION 40 18 00.00 40
Page 30
PIPE SIZE
(INCHES)
ROD SIZE
(INCHES)
STEEL PIPE
(FEET)
2-1/2 to 3/1/2
1/2
12
4 to 5
5/8
16
6
3/4
16
8
7/8
20
Support vertical risers independently of connected horizontal piping
wherever practicable and guide for lateral stability. Place clamps under
fittings.
[ Support pipe at each floor and at not more than 4500 millimeter 15-foot
intervals for pipe DN50 2-inches and smaller, and at not more than 6100
millimeter 20-foot intervals for pipe DN65 2-1/2-inches and larger.
][After the piping systems have been installed, tested, and placed in
satisfactory operation, tighten hanger rod nuts and jam nuts to prevent any
loosening.
]3.1.5
Sound Stopping
Provide effective sound stopping and adequate operating clearance to
prevent structure contact where pipes penetrate walls, floors, or
ceilings. Where penetrations occur from pipe chases into occupied spaces,
provide special acoustic treatment of ceilings. Finish penetration to be
compatible with surface being penetrated.
Sound stopping is as specified with paragraph SLEEVES.
Lead wool and viscoelastic damping compounds may be proposed for use where
other sound-stopping methods are not practicable provided temperature and
fire-resistance characteristics of the compound are suitable for the
service.
3.1.6
Sleeves
Supply and install sleeves where piping passes through roofs, through
masonry or concrete walls, and through floors.
Lay out sleeve work before placement of slabs or construction of walls and
roof, and set all sleeves necessary to complete the work.
Where pipe sleeves are required after slabs and masonry are installed, core
drill holes to accommodate these sleeves. Set sleeves in place with a
two-component epoxy adhesive system approved by the Contracting Officer.
No load are to be carried by such sleeves unless approved by the
Contracting Officer.
Ensure sleeves are flush with the ceilings and floor in finished spaces and
extend 50 millimeter 2-inches above the floor in unfinished spaces.
Ensure sleeves passing through steel decks are continuously welded or
brazed to the deck.
Ensure sleeves extending through floors, roofs, load bearing walls, and
SECTION 40 18 00.00 40
Page 31
fire barriers are continuous and fabricated from Schedule 40 steel pipe
with welded anchor lugs. Form all other sleeves by molded linear
polyethylene liners or similar materials which are removable. Provide a
sleeve diameter large enough to accommodate pipe and sealing materials with
a minimum of 10 millimeter 3/8-inch clearance. Ensure sleeve accommodates
mechanical and thermal motion of pipe to preclude transmission of vibration
to walls and the generation of noise.
Pack solid the space between a pipe and the inside of a pipe sleeve or a
construction surface penetration with a mineral fiber conforming to
ASTM C592, Form B, Class 8 wherever the piping passes through firewalls,
equipment room walls, floors, and ceilings connected to occupied spaces,
and at other locations where sleeves or construction surface penetrations
occur between conditioned and unconditioned spaces. Fill space between a
pipe, bare or insulated, and the inside of a pipe sleeve or construction
surface penetration with an elastomer caulk to a depth of 13 millimeter
1/2-inch. Ensure surfaces to be caulked are oil- and grease-free.
3.1.7
Escutcheons
Provide escutcheons at all penetrations of piping into finished areas.
Where finished areas are separated by partitions through which piping
passes, provide escutcheons on both sides of the partition. Where
suspended ceilings are installed, provide plates at the underside only of
such ceilings. Use chrome-plated escutcheons in occupied spaces and of
sufficient size to conceal openings in building construction. Attach
escutcheons firmly, preferably with setscrews.
3.1.8
Flashings
Provide required flashings at mechanical systems penetrations of building
boundaries.
3.2
FIELD QUALITY CONTROL
**************************************************************************
NOTE: Delete paragraph title and following
paragraphs when vacuum systems are not applicable to
the project.
**************************************************************************
3.2.1
Vacuum Systems Testing
**************************************************************************
NOTE: If the specified system is identified as
critical, configured, or mission essential, use
Section 01 86 12.07 40 RELIABILITY CENTERED
ACCEPTANCE FOR MECHANICAL SYSTEMS to establish
predictive and acceptance testing criteria, above
and beyond that listed below.
**************************************************************************
Perform PT&I tests and provide submittals as specified in Section
01 86 12.07 40 RELIABILITY CENTERED ACCEPTANCE FOR MECHANICAL SYSTEMS.
Prior to acceptance of the work, pressure and vacuum test completed systems
in the presence of the Contracting Officer.
**************************************************************************
SECTION 40 18 00.00 40
Page 32
NOTE: Because of the expansive force of compressed
air, pneumatic testing requires special precautions
and competent supervision to prevent injury and
damage should a failure occur.
**************************************************************************
Conduct pneumatic pressure tests utilizing dry, oil-free compressed [air]
[carbon dioxide] [nitrogen] for the system under test. Pressure test in
two stages, preliminary and acceptance.
Evacuate personnel from the area not directly involved in pneumatic
pressure testing of ferrous piping in excess of 34.5 kilopascal 5 psi.
Pressure testing of any system for any purpose includes preliminary testing
by applying internal pressures not in excess of 35 kilopascal 5 psi,
swabbing joints under test with standard high film-strength soap solution
conforming to MIL-PRF-25567, and observing for bubbles.
When testing reveals that leakage exceeds specified limits, isolate the
leaks, replace repaired defective materials where necessary, and retest the
system until specified requirements are complied with. Remake leaking
gasket joints with new gaskets and new flange bolting and discard used
bolting and gaskets. Remake leaking tubing joints with the new fittings
and new tube ends.
Only use standard piping flanges, plugs, caps, and valves for sealing off
piping for test purposes.
Remove components that would otherwise sustain damage due to test pressure
from piping systems during testing. Check piping system components such as
valves for proper operation under system test pressure.
[ Protect expansion joints against system pressures by suitable
movement-limiting devices.
] Add no test media to a system during a test for a period as specified or to
be determined by the Contracting Officer.
Duration of a test will be determined by the Contracting Officer. Test may
be terminated by direction of the Contracting Officer at any point during a
24-hour period after it has been determined that the permissible leakage
rate has not been exceeded.
3.2.2
Test Gages
[ Ensure pressure test gages conform to ASME B40.100 and have a dial diameter
of at least 125 millimeter 4-1/2 inches. Maximum permissible scale range
for a given pressure test is such that the pointer during a test has a
starting position at midpoint of the dial or within the middle third of the
scale range. Ensure a certification of accuracy and correction table bears
a date within 90 calendar days prior to test use, test gage number, and the
project number, unless otherwise approved by the Contracting Officer.
][Government will furnish vacuum test gages.
][Government will furnish pressure and vacuum test gages.
SECTION 40 18 00.00 40
Page 33
]3.2.3
Acceptance Pressure Testing
Test during steady-state ambient temperature conditions.
Test piping systems at 175 kilopascal 25 psi. Maintain test pressure for a
period of not less than 2 hours with no pressure drop.
Test control and instrumentation tubing systems at 210 kilopascal 30 psi.
Maintain test pressure for not less than 24 hours with no measurable
pressure drop.
3.2.4
Acceptance Vacuum Testing
**************************************************************************
NOTE: Prior to selection of the following test
criteria, review provisions to ensure suitability
for project application.
**************************************************************************
Evacuate piping system to a pressure of 13 millimeter 0.51 inches of
mercury, absolute. Operate each system at least three times during leakage
tests. Rate of pressure rise cannot exceed 0.8 millimeter 0.032 inches of
mercury per hour.
When leakage exceeds the allowable rate test suspected area utilizing a
helium mass spectrometer in either the detector-probe or tracer-probe
configuration.
a.
Detector Probe Method: Internally pressurize test piece with helium
gas and use a mass spectrometer (tuned for helium) to probe the
exterior surface to spatially isolate the leak. Employ a flexible line
to scan a capillary tube over the surface to detect the leak.
b.
Tracer Probe Method: Evacuate the test piece and flood the suspect
area in helium gas. Simultaneously,use a helium mass spectrometer to
examine the atmosphere within the test piece to determine the extent to
which helium is drawn into the evacuated volume. For more accurate
measurements, the suspect area can be jacketed and the area between the
jacket and the test piece can be filled with 90 to 100-percent pure
helium gas as the testing is conducted.
-- End of Section --
SECTION 40 18 00.00 40
Page 34